Roto Grip Exotic Gem Bowling Ball Review

The Roto Grip Exotic Gem rolls into the HP4 line just in time for the holiday season. It uses the asymmetrical Defiant LRG weight block from the Gem and pairs it with a new aggressive pearlized coverstock. The new MicoTrax Pearl Reactive coverstock starts earlier than both the eTrax PLUS Pearl from the RST X-2 and the eTrax Pearl from the Rubicon UC2. Paired with the low RG core, this ball digs into the lane and provides a smoother motion at the breakpoint relative to most pearls, with excellent continuation on the back end.

Cranker has matched up very nicely with a number of recent Roto Grip bowling balls, such as the RST X-2, Rubicon UC2, and Hyped Pearl, and the Exotic Gem is another welcome addition for him. With an earlier read than the RST X-2, the new cover allowed Cranker to stay in the oil a bit more and still get through the pins without issue. If he tried to open his angles too much and got the ball to the dry quickly, the smoother shape got back to the pocket, but didn’t quite kick out the corners. When the track started to hook, his best option was to either change balls into something that was cleaner and more angular at the breakpoint, or to move right with his feet and laydown to allow the ball to burn off a bit more energy and set up in the pocket.